package com.greenx.hello.number;

public class HelloInteger {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		testInstance();

	}
	
	private static void testInstance(){
		Integer i=new Integer(2);
		
		System.out.println(i);
		i=4;
		System.out.println(i);
		
		i=null;
		i=-1;
		
		System.out.println(i);
	}

}
